Update package versions in requirements.txt

Author: YalanBi

docs/requirements.txt

@@ -1,15 +1,13 @@
 # File: docs/requirements.txt
 
 # Defining the exact version will make sure things don't break
-sphinx==5.3.0
-sphinx_rtd_theme==1.1.1
-sphinx-argparse==0.3.1
-sphinx-notfound-page==1.0.2
-docutils<0.18
-readthedocs-sphinx-search
-myst_parser
-nbsphinx
+sphinx==8.1.3
+sphinx_rtd_theme==3.0.2
+sphinx-argparse==0.5.2
+sphinx-notfound-page==1.1.0
+readthedocs-sphinx-search==0.3.2
+myst_parser==4.0.1
+nbsphinx==0.9.7
 Jinja2
-IPython
-isotools
-python-ternary
+IPython==9.2.0
+isotools